I have two male relatives that are recently separated from their wives. Their spouses are not invited to the wedding as both are no longer friendly with their spouse and I am not close with their spouses either. My question is, should they be given a plus one? Both are in new relationships, but these women happen to be people they were with while they were married (which ultimately lead to them getting separated). My sister believes inviting the "other woman" to the wedding is inappropriate if they are not officially divorced from their wife. I have not met either of these women, but was under the impression I should invite them with their new partner as that is who they are currently with.